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powerpc/pci: Don't configure PCIe settings when PCI_PROBE_ONLY is set

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We don't want to configure PCI Express Max Payload Size or
Max Read Request Size on systems that set that flag. The
firmware will have done it for us, and under hypervisors such
as pHyp we don't even see the parent switches and bridges and
thus can make no assumption on what values are safe to use.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt 2011-09-26 14:22:39 +10:00
parent d12b524f8b
commit bb36c44557
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/kernel/pci-common.c
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@ -1732,7 +1732,7 @@ void __devinit pcibios_scan_phb(struct pci_controller *hose)
hose->last_busno = bus->subordinate = pci_scan_child_bus(bus);
/* Configure PCI Express settings */
if (bus) {
if (bus && !pci_has_flag(PCI_PROBE_ONLY)) {
struct pci_bus *child;
list_for_each_entry(child, &bus->children, node) {
struct pci_dev *self = child->self;